Attachment for ceramic combustion chambers



April 10, 1951 F. CHRISTENSON ATTACHMENT FOR CERAMIC c0MBusTIoN CHAMBERSFiled Feb. 9, 1946 INVENTOR flaw/r flaw/370mm ATTORNEYL Patented Apr.10, 1951 ii UNITED STATES .rATENr OFFICE ATTACHMEN T FOR CERAMICCOMBUSTION CHAMBERS Frank Christensen, Jamaica amass.ApplicationFebruary 9, 1946, Serial No. 646,582

1 Claim.

My invention comprises'a new and improved form of attachment .to .bevusedv in connection-with ceramic combustion chambers.

An object of the invention is to increase the height of the wall of sucha chamber, such for instance as shown in my prior Patent 2,370,008 datedFebruary 20, 1945, or of the type shown in the patent to McDonald et a1.#2,0l2,171.

Conditions frequently arise in the use of ceramic combustion chamberswhich require a deeper or higher wall surface. Heretofore when suchconditions arose and it was necessary to increase the height of thewall, it has been necessary to either build an entirely new combustionchamber or to increase the height of the present one by building anaddition thereto and set it on top of the oven which has been installedand is in use. Such a procedure is objectionable and expensive for thereason that it involves building an addition to the chamber in use, butalso such addition being made of ceramic material, is heavy and awkwardto transport and install.

The principal object of the present invention is to provide an extensionor addition to the walls of a combustion chamber by means of a metalattachment or addition thereto which may be very economically made andreadily transported and attached to any combustion chamber, whether thechamber be circular, octagonal or rectangular in shape.

Inmany and in fact most instances, it is desirable to have a bafileplate at the top of the chamber in order to conserve and control thevolume of heat.

A further object of the invention is to provide a bafiie plateconstructed in such a way that it may be used in conjunction with themeans for increasing the height of the oven heretofore mentioned, or itmay be used independently thereof.

In order to accomplish the results heretofore mentioned, my inventionconsists of a device constructed of sheet metal of any desired height toenable it to be placed on the top of a combustion chamber and securedthereto by flanges. The baille plate may be secured to said extensionand made adjustable.

Although the novel features which are believed to be characteristic ofthis invention will be more particularly pointed out in the claimsappended hereto, the invention itself may be better understood byreferring to the following description in which a specific examplethereof has been set forth for purposes of illustration.

In the accompanying drawing:

Fig. 1 is a top planview of an oven with the attachment resting thereon.

Fig. 2 is a sectional view of the device taken on the line 22 of Fig. 1.

The device consists of a member 3 formed of preferably thin but heatresisting metal or alloy.

:Riveted or otherwise secured to the member 3 are preferably rectangularmetal straps 4 which may bepn'the,insidenoroutside of the member 3 andare bent at right angles to form extensions 5. These extensions 5 restupon the top of the wall 6 of a combustion chamber so that the metalmember or extension 3 fits closely against the sides of the combustionchamber and rests thereon and is prevented from sliding down on the sideof the chamber by the extensions 5. These extensions may if desired belong enough to extend over the top of the combustion chamber and bent atright angles to grasp the wall 6 of the combustion chamber. Holes I areformed in the extensions 5 so that, if desired, the device may bescrewed or bolted to the top of the wall 6 of the combustion chamber. Itwill be understood that the device may be placed on the inside oroutside of the top of a combustion chamber.

Secured to the rear of the device 3 is a plate 8. This plate 8 containsa hole 9 through which projects a bolt I0 having a nut Illa and a washerI I. In Fig. 2 is shown a baflie plate I2 of substantially cone shape.At one side of the top of the baffle plate is secured a strip of metalI3 one end of which is welded, riveted or otherwise secured at I4 to theedge of the baflle plate. A strip of metal I 5 at one end thereofoverlaps the member I3 and the other end of the member I5 is bent atsubstantially right angles I6 so that the bent over end abuts againstthe plate or member 8 secured to the wall of the member 3. In'the memberI5 is formed a slot I! through which the bolt Ill extends and the heightof the bafiie plate may be raised within the limits of the slot IT bymoving the member I5 up or down and securing it in position bytightening the nut Illa. The mem-, ber I5 overlaps the member I3 andextends beyond the center of the baiiie plate. The member I5 alsocontains a slot I8 through which extends a bolt I9 having a nut 20 and awasher 2| so that the baffle I2 may be adjustably secured by means ofthe bolt l9 and nut 20.

While the extension device is shown circular in form in the drawing, itwill be understood that the device, being made of sheet metal, caneasily be preformed so as to fit a chamber of any desired shape.

Certain specific terms have been used herein for convenience in referredto the various details of the invention. It is to be understood,however, that these terms are to be given as broad an interpretation asthe state of the art will permit, although a specific embodiment of theinvention has been set forth for purposes of illustration, variouschanges and modifications may be made therein as will be apparent to aperson skilled in the art, the invention is only to be limited inaccordance with the scope of the following claim.

I claim:

The combination of a ceramic combustion chamber and a concentricmetallic attachment for increasing the height of the chamben saidattachment being preformed to be substantially of the same contour asthe chamber and to constitute a vertical extension thereof, lateralflanges on the lower portion of the attachment wherebyr' the same may bepositioned on the upper rim of v the chamber so as to constitute acontinuation thereof, a vertical arm adjustably mounted 'on the side ofthe attachmenhsaid arm havinga horizontal extension at the top thereofand a bafiie plate adjustably secured to the end of said- REFERENCESCITED The following references are of record in the iile of this patent:

UNITED STATES PATENTS Number Name Date 82,637 Redway Sept. 23, 1868379,755 Baldwin Mar. 20, 1888 2,186,373 Faulds Jan. 9, 1940 2,186,374Faulds Jan. 9, 1940 2,192,752 Miller Mar. 5, 1940 2,411,324 Gagnon Nov.19, 1946 FOREIGN PATENTS Number Country Date 104,504 Austria Oct. 25,1926

